Footwear sole



FIG. 1 is a front perspective view of a bottom surface of a footwear sole;

FIG. 2 is a side perspective view of a top surface thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a right view thereof; and,

FIG. 8 is a left view thereof.

The broken lines shown in the figures are for the purpose of illustrating unclaimed portions of the invention and boundaries only and form no part of the claimed design. 

CLAIM The ornamental design for a footwear sole, as shown and described. 